Stainless Steels
Ferritic
TDS-J™ | High-Corrosion Resistance and Soft Magnetic Stainless Steel
Overview & Features
It has high magnetic flux density and low coercive force, making it excellent in magnetization, demagnetization, and magnetic shielding properties. It can be used as electromagnetic stainless steel by applying magnetic annealing.
Main features of TDS-J:
(1) Electromagnetic Stainless SteelIt can be used as an electromagnetic stainless steel by magnetic annealing.
(2) Corrosion Resistance
Its corrosion resistance is equivalent to austenitic stainless steel SUS304, so it can be used without plating or other surface treatment in general environments.This material is recommended for those who have corrosion resistance issues with conventional electromagnetic stainless steel.
We can also manufacture foils below 0.10 mm in thickness and in small lots.
Examples of Applications
Shielding Cases, Electromagnetic Shields
Available Shapes
Manufacturable Range (COIL, SHEET)
Thickness
Please contact us.
Width
3.0-300mm
Length
COIL or SHEET less than 2000mm
This is the manufacturing range of coils and sheets we manufacture.
Chemical Composition
Physical Properties
Density
7.74 g/cm³
Specific Heat
440 J/(kg・K)（25℃）
Electrical Resistivity
58 μΩ・cm
Young's Modulus
204 GPa
Thermal Expansion
10.5×10-6/K（20～100℃）
Thermal Conductivity
22.5 W/(m・K)
Melting Range
1460-1500 ℃
Magnetism
Soft Magnetism
Mechanical Properties
It has mechanical properties equivalent to SUS430. Detailed condition is to be disucussed later.
Corrosion Resistance
It has corrosion resistance equivalent to SUS304 with higher Cr content and added Cu and Ti which contribute to corrosion resistance.
It has higher corrosion resistance than SUS430, soft magnetic iron steels, and permalloy and in general environments, it can be used without plating or other surface treatment.
The results of the salt spray test is shown in the figure below and there is no rust forming as well as SUS304.
Magnetic Properties・Electric Properties
The table below shows the comparison of magnetic properties of TDS-J and SUS430.
*Values are representative values obtained by VSM (vibrating sample magnetometer).
It has better maximum permeability and coercive force than SUS430, resulting in a high response to external magnetic fields.
Related Pages
Soft Magnetic Materials
Soft magnetic material is easily magnetized when a magnetic field is applied, but returns to its original state when the magnetic field is removed. We also manufacture our original steel grades such as electromagnetic stainless steel with corrosion resistance and extremely high strength.
Stainless Steels
Stainless steel is an alloy of iron (Fe) with at least 10.5% chromium (Cr) and is used in a wide range of applications because it has good properties in terms of corrosion resistance, strength, workability, and heat resistance.